package book;

public class BookList {

    private static final int DEFAULT_SIZE = 10;    //  定义一个常量   图书馆的馆藏容量
    private Book[] books = new Book[DEFAULT_SIZE];

    public BookList(){
        books[0] = new Book("三国演义","罗贯中",89,"小说");
        books[1] = new Book("西游记","吴承恩",78,"小说");
        books[2] = new Book("红楼梦","曹雪芹",49,"小说");
        this.usedSize = 3;
    }

    public Book getBook(int pos){
        return this.books[pos];
    }

    public void setBook(Book book){
        this.books[usedSize] = book;
    }

    public void setBook(int pos,Book book){
        this.books[pos] = book;
    }

    private int usedSize;  // 记录当前books数组中有多少本书


    public int getUsedSize() {

        return usedSize;
    }

    public void setUsedSize(int usedSize) {

        this.usedSize = usedSize;
    }
}
